Hydration pack



FIG. 1 is a top left front perspective view of the hydration packshowing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

The broken lines in the drawings illustrate environmental subject matterand form no part of the claimed design.

CLAIM The ornamental design for a hydration pack, as shown anddescribed.